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Top-Rated Water treatment & purification system installers and replacers in Gaithersburg - Updated Nov 2026

Avatar for Purfect Water Solutions, Inc.
Purfect Water Solutions, Inc.
4.8(
487
)
Water Treatment & Purification System - Install or Replace

Serving Gaithersburg, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Warranties offered

"Installed both a water softener and reverse osmosis system at my home. They did a great job with the installation, was professional, and ensured everything was working perfectly. Highly recommend their services for water purification needs!â"
1
Reverse Osmosis
Our work
Install 2
Our work

+1

Response time10 hrs
Response rate100%
1118 neighbors recently requested a quote
Avatar for Hague Quality Water of Maryland, Inc.
Hague Quality Water of Maryland, Inc.
4.7(
326
)
Water Treatment & Purification System - Install or Replace

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 1993

Free estimates

Emergency services offered

"I set up appointments to evaluate our water with5 providers. All told me I needed there treatment devices several told me I needed 5 or 6 devices. Tim Edwards said lets test the water and see what you have. We had salt water intrusion and needed a new well. Professional friendly service."
 MD Green Reg
Working hard to be green
Our Hague Equipment
 100% wind energy
New Install

+24

32 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Atlantic Blue Water Services
Atlantic Blue Water Services
4.8(
124
)
Water Treatment & Purification System - Install or Replace

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"Excellent plumbers and water treatment systems experts! Josh is fabulous.... so professional, courteous, AND knowledgeable.... Alwasy a pristine job, solves many issues realiably and I can count on him to know just what to do and how to do it!"
The Fleet
The Building on Rt. 140
Main water line replacement!
Well Pump Replacement
Training Session!

+22

Response time10 hrs
Response rate88%
83 neighbors recently requested a quote
Avatar for Leaf Home Water Solutions
Leaf Home Water Solutions
4.2(
202
)
Water Treatment & Purification System - Install or Replace

Serving Gaithersburg, MD and surrounding areas

Approved (Corporate)

In business since 2020

Free estimates

Warranties offered

"The installation was done quickly and done well. The customer service was very professional. The only negative of this transaction was the cost of the project. It was the cost they told me it would be but I was just surprised that a replacement water softener system would cost that much. Overall I would definitely recommend this company."
Leaf Home Water Solutions
Leaf Home Water Solutions
Will filtered water help me save money?
What does filtered water taste like?
How do I know what contaminants are in my water?

+44

141 neighbors recently requested a quote
Recommended by71%of homeowners
Chesapeake Water Treatment, Inc.
4.4(
32
)
Water Treatment & Purification System - Install or Replace

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 1993

Credit card accepted

Customers say: Quick response

"I was very impressed with the follow up calls. Marlene was patient and called back multiple times. When I finally scheduled the appointment Tom was professional and thorough in his assessment. Another company told me I needed to replace parts on my water filter system that would take months to order. Tom, said they just needed set properly and it will work. The best part was a flat fee for the service call and parts if needed. I was so happy I can't thank you enough. Honesty should be rewarded!"
Response time1 day
Response rate90%
59 neighbors recently requested a quote
Markool Heating & Cooling, LLC
4.7(
18
)
Water Treatment & Purification System - Install or Replace

Serving Gaithersburg, MD and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

Welcome to Markool Heating & Cooling. We proudly provide the highest quality of service and craftsmanship for each aspect of your project. Our depth of knowledge and experience solidify our belief that customer service stands as the highest priority. We eagerly look forward to working with you and making your vision a reality. Give us a call, text, or email today, and let us get started!

Response time1 day
15 neighbors recently requested a quote
Recommended by94%of homeowners
F.H. Furr Plumbing Heating & Air Conditioning Inc
4.0(
25
)
Water Treatment & Purification System - Install or Replace

Serving Gaithersburg, MD and surrounding areas

Approved (Corporate)

In business since 1981

Free estimates

Emergency services offered

Whether you need a repair, preventive maintenance, or replacement, we are your plumbing, heating, and air conditioning service provider in the northern Virginia and surrounding areas. We invite you to give us a call!

9 neighbors recently requested a quote
Recommended by54%of homeowners
Avatar for R & G Water Systems Inc
R & G Water Systems Inc
4.9(
58
)
Water Treatment & Purification System - Install or Replace

Serving Gaithersburg, MD and surrounding areas

In business since 1998

Free estimates

Emergency services offered

"We lost our water and Rick and his team came out late evening to determine the problem. They returned the following day and installed a new well pump. Georgina kept in touch as far as arrival times both days. In addition, they installed and service our water treatment system. Excellent customer service and highly recommend!"
Recommended by96%of homeowners
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